[Intel-wired-lan] [next-queue PATCH v4 3/4] net/sched: Introduce Credit Based Shaper (CBS) qdisc

David Miller davem at davemloft.net
Thu Oct 5 19:05:08 UTC 2017


From: Rodney Cummings <rodney.cummings at ni.com>
Date: Thu, 5 Oct 2017 18:41:48 +0000

> The IEEE Std 802.1Q specs for credit-based shaper require precise transmit decisions
> within a 125 microsecond window of time.
> 
> Even with the Preempt RT patch or similar enhancements, that isn't very practical
> as software-only. I doubt that software would conform to the standard's
> requirements.
> 
> This is analogous to memory, or CPU.

I feel like this is looking for an excuse to not have to at least try to implement
the software version of CBS.


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